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  3. State and local authorities from New Hampshire to San Francisco have begun banning the use of facial-recognition technology. The

State and local authorities from New Hampshire to San Francisco have begun banning the use of facial-recognition technology. The

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问题     State and local authorities from New Hampshire to San Francisco have begun banning the use of facial-recognition technology. Their suspicion is well【C1】________: these algorithms make lots of mistakes, particularly when it【C2】________identifying women and people of color. Even if the tech gets more accurate, facial recognition will unleash an invasion of privacy that could make anonymity impossible.【C3】________, bans on its use by local governments have done little to curb adoption by businesses from startups to large corporations.
    Automated face-recognition programs do have advantages, 【C4】________their ability to turn a person’s unique appearance into a biometric ID that can let phone users【C5】________ their devices with a glance. To train such systems, researchers【C6】________a variety of photographs to a machine-learning algorithm. The more data they【C7】________, the more【C8】________these programs become.
    Too often,【C9】________, the algorithms are deployed prematurely. In London, for example,  police have begun using artificial-intelligence systems to scan surveillance footage in an attempt to【C10】________wanted criminals as they walk by—despite an independent review that found this system labeled suspects【C11】________only 19 percent of the time. An inaccurate system could【C12】________【C13】________innocent citizens of being miscreants, earmarking law-abiding people for tracking, harassment or arrest. This becomes a civil-rights issue because the algorithms are more likely to misidentify people of color.
    Some companies are attempting to improve their【C14】________by feeding them more nonwhite and nonmale faces—but they are not always doing it in【C15】________ways. Google contractors in Atlanta, for example, have been accused of exploiting homeless black people in the company’s quest for faces, buying their images for a few dollars. Such stories suggest that some companies are tackling this problem as an afterthought【C16】________addressing it responsibly.
    Even if someone releases improved facial-recognition software【C17】________high accuracy across every demographic, this technology will still be a【C18】________Because algorithms can scan video footage much more quickly than humans can, facial recognition【C19】________constant surveillance of a population. These systems can easily be used to treat every citizen like a criminal, which destroys individual privacy,【C20】________free expression and causes psychological damage.
【C5】
选项 A、unlock
B、unpack
C、lock
D、pack
答案A
解析 动词辨析题。四个选项分别为[A]unlock“解锁”；[B]unpack“卸下……的重担”；[C]lock“锁住”；[D]pack“包装”。空格所在句意为“该特征可以使手机用户通过看一眼手机________其设备”，根据常识，四个选项中只有[A]选项符合文意和语境。
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